The funnest thing to do at the beginning of each heat is to pick a car and root for it. If it looks like it's not doing so great then you quickly switch cars and hope nobody notices you are no longer rooting for your original pick.
"What a feature!" was said by the announcer dude about every 10-20 seconds. It was hilarious the first 5 times, but after about 20+ more times it got old.